the discharge of an ovum from a vesicular follicle of the ovary; this usually occurs on the 14th day after the first day of the last menstrual period (Morris 1992)
natural family planning in which the fertile period is inferred from changes in the character and quantity of cervical mucus; ovulation is marked by an increase in mucus that becomes sticky and then clearer and slippery
When a woman or female animal ovulates, an egg is produced from one of her ovaries. Some girls may first ovulate even before they menstruate. + ovulation ovu·la·tion By noticing these changes, the woman can tell when ovulation is about to occur. when a woman or female animal ovulates, she produces eggs inside her body (ovulum , from ovum; OVUM)